Differencing Specification Window
Use the Differencing Specification window to specify the list of differencing lags d=(lag, ..., lag) in a factored ARIMA model. To specify a first difference, add the value 1 (d=(1)). To specify a second difference (difference twice at lag 1), add the value 1 again (d=(1,1)). For first differencing at lags 1 and 12, use the values 1 and 12 (d=(1,12)).
Controls and Fields
- Lag
specifies a lag value to add to the list. Type in a positive integer or select one by clicking the spin box arrows. Duplicates are allowed.- Add
adds the value in the Lag spin box to the list of differencing lags.- Remove
deletes a selected lag from the list of differencing lags.- OK
closes the window and returns the specified list to the Factored ARIMA Model Specification window.- Cancel
closes the window and discards any lags added to the list.